Tire casing and tube protector



Sept. 20,1927.

R. 0. sARvER TIRE cAsING AND TBE PROTEGTORV -Filed Nov 19. 1925 Sept. 20, 1927.

RAYD; salama,y or OWATONNA, Minnasoma.y

TIRE Gesine AND' fiumi' i'fcno'iion.

Application filed ove'mber llns invention. relates to rim and tire structure for a pneumatic tire and particu'- larly to a tube and casing' protector adapted to be disposed over the crack formedV in a transversely divided rim'. A great many present da-y automobile tires, especially those ot larger ysize are constructed' with eornparativelyA straight sides at theb'ead portion of the casing,` and the rim receivingpthese tires also has substantially' straightsi'd'es instead of being` turned inward to give a clinchi'n'gE effect. Such rims are transversely divided andI heldv together at'. the' divided pointby some kind of looking' meansl rThis division of the rimv forms a crac); through which moisture and dirt can pass intotco'ntact with the' casing'. n t has, therefore, been the common practice heretoforey to' have a liner between the casing and tube'at the inner part of the easing adjacent rim, which lining comprises a circumferential strip oi' rubber o" rubber impregnated fabric. v I v lt 'isvan object of this invention' to provide asini-ple andv eii'icieiit 'device' adapted to be placed over the said crack` in the rim which will prevent water, moisture or dirt from passing` through said crack into' engagement with the casing or tube therein lt is a further object oit the invention to provide such a device adapted' to" seal the crack in the rim and protect the -casing and tube, comprising` a strip rial extending transversely of the riml be"-` tween the rsameY and tliepcasing' whereby a iiner will not beI needed between the tube and casing. "y y it is more specifically an object-fof' the'invention to' provide a protecting devicev 'for the casing and tube comprising a strip" ot yiehling,- material adapted tov extend'tra'nsversely of the rim andy over the'craclrtliere'- in, which strip has means engagine with the rim'to hold the same inh proper" relation to the -rim. l yThese and other objects and the invention will be fully set orth in' the "following description made in connection with the accompanying" drawings infwhieh like reference charactersr'e'fe'i tthesame parts throughout the different views7 and' in which.v

the rimand a portionof the tireshowing the presenti invent-lons;

Fig. 2 is a view in radial section snowing ot yieldingmateadvantages ot i9; 12`5; seri-ful No. 701044.

the device applied`r to the rii'n before the tire is applied;l y 33,isla-plairvievv of a portion of the rim at the divided portion showingV the devioe disposedi overy the eiacl, a portion of the devicebeing: breiten away; i y

Fig. 4' vertical sect-ibn taken on the Y line 4;-4' of Fig. 2; as indicated by the arrows; and y 5* i's ay vertical section taken on the 'line 5 5 of? Fig.- 3,- as indicated by the arrows'. y

Referring to the drawings,l a` portion of a i'iii'ii'is shwiisiich asnow used with'mst tiiesgpaiticularly, tires of the larger size. The casing of the tire has'fa bead." portib'n 7 formed' thereon'wliioh fitsV down; approximately intov thesides ofthe rim and extends almost to; the cent-er thereof.v The l inner `tube l2y of the' tire is show-ii within the casing' -71 The' ririr is' divided= transversely, the

end port-ions"GLthereoi"Nl a'ceiittliedi'vision iforining a" ci'aclt- 8, asf shov'v'n"y in'2 Figi' 3. In actual' praotiide the ends-oit ther'iiri usually are in Contact? for al portion, atleast, oil the line'of division; thel crack 8 being`Ty sho-wn somewhat exaggerated in Figs.; and? 4. The? rind is usually provided withl some Vsort of locliinf' de`vic'e',`-suclil as the tongue 9 pivote'd to one2 of the end portions 6a' andi havingthe lug' 9a adapted t'o"sea`t in the'hole' or redelss' 9b the other end" portionv 6 when the rim; is' in nornial expanded position.`

In' accordance`v withv the present invention, a' member l0 is provided-r aiid while' this ineiiib'er'may takel vaiiiisshapesg inthee`m bodiihent?` of the'v inventionVV illustrated7 the s'rn'is shownas comprisingr astri p'of yielding' material, suohas softrubber of suiiicient .witltli to extend an appreciable distance at eaclit side' of the' crack- S The strip l() 'eiftends'transverselyrl off the rim inrpositionto have the crack 8 substantiallycentral thereofi and the' stripiswprovided' with means engaging' theI rim 6 tb hold" the strip in proper position; Vhile'various' means may beus'ed` in the embodiment of' thelinve'ntion illustrated the'stiip is shown as pivifded with clips' 11.-' Theseolipsyin' priactic'eare nia'd'e o't'very thin metal and wilihav'e a negligible thicliiiess Yin"comparisonj with the thicknessY ot the! strip 17,03. This thickness lof'. theA metal iu the drawing is? gieatlf-.fv exaggeratedas this was' necessary, inf-order to y illustrate ysoihe thir'kiiss@ or` bodyI off the met-ai. The @nps k'ii are eemarsenal' ai@ strip at its side edges and 'pointed tongues l1 are struck up from the side of the clips projecting through the rubber strip l() so that the strip is securely held in said clips. In practice, the metal ofclips ll as stated, is quite thin and when the clips are pressed on the rubber strip the rubber is compressed so that the metal at each side ofthe rubber strip extends only an exceedingly small distance above the surface of the strip. f

Such rims, as illustrated, arevcontractcd in order to Yassemble the tire thereon, one of the ends G being drawn inwardly. The

' .strip l0 andclips kll will be placed over the considerable rim, shown in yFig. 2 so as to overlie the line of division thereof. The tire is now placed around the rim and the same will press the strip l0 down into the rim, as shown in l? ig. l. As the rim is expanded fully into the tire the end A6 will move` outward substantially so as also to be embraced by the clips l1 and when the rim is fully expanded the device will take the position shownA in Fig. l.

y In the operative position of the device shown'in Fig. l it will be seen that the sti-'ip l0 extends transversely of the inner side of the. rim over crack 8 so that said'crack is entirely covered along` the bottom of the rim and upward along the side of the rim for a distance. The strip lO is held pressed tight against the r'im by the pressure of the tire, due to the inflation and pressure of air therein. As stated above, theV metal of the clips l1 is quite thin and it Will be noticed that there is no metal at the inner side of strip l0 at the central portion thereof, vso that strip 10 can press against the sides of the rim over the crack and almost to the outer edge of thc rim. There is little tendency for water or moisture to enter the rim at Vthe sides, the water or moisture entering the crack usually at the inner side of the rim where it is thrown out against the inner surface of the rim by centrifugal force. lith applicants structure it is seen that the crack 8 is effectively sealed and no moisture or' water lcan pass therethrough in contact with the casing 7 or tube l2.' The casing and tube are thus effectively'protected against moisture which would act to rust the rim and rot the casing and tube. Viith the 'casing 7 and tube l2 thus protected the liner or strip usually placed between the casing and tube is not necessary and can be eliminated. y

' From the above description it is seen that applicant hasprovided a very simple and efficient device for protecting theftube andv casing against any dirt,l water or moisture entering through the crack in the rim. The device can be made atvery small expense and easilyvplaced in position. By using the device the liner can be eliminated and la great saving thus effected. Experience has shown that the inner tubes of the tires usually fail where moisture and dirt penetrate to the outer side of the rim and corrode the rim. This moisture also rots the tire and erosion occurs Vat the rustedpart'of the rim so that the material of the tube is so damagedas to destroy thel usefulness of the tube. With the present linvention the tube is eliiciently protected and the moisture cannot reach the inner side of the rim next to the tire to r'ust the same. I

"lt will, of course, be understood, that Various changes may be made in the form, details, arrangement and proportions of the parts without departing from thescope of applicants invention, which, generally stated, consists in a device capable of carryTH ing out the objects above set forth, in the novel parts and combinations of parts dis-- closed and defined in the appended claims.V

What is claimed is: Y

l rlhe combination with a divided rim for .use with a tire said rim having a trans-V` verse crack therein, of a tube and casing protector comprising a comparatively thin strip of yielding material extending transversely ofsaid rim and disposed over said crack and' between said rim and casing of said tire Awhereby,moisture is prevented from passing through said crack into contact with said casing and tube therein.v

2. The combination with a divided rim for usewith a tire said ,rim having atransver'se crack therein, of a tube and' casing protector comprising a comparatively thin strip of yielding material extending trans versely of said rim and disposed over. said crack and between said rim and casing of said tire, and means secured to said lstrip and engaging said rivm for holding 'said strip in place.

v 8. The combination with 'a divided rim for use with a straight-sided tire, said rim hav ingY a transverse crack therein, of a tube and casing protector comprising a compara-- tively thin strip of yielding material extending'transver'sely of said rim and disposed over said craclr and between said rim and casing of said tire, and clips secured to the ends of said strip for engaging overthe edge -of the rim for holding said strip in place. Y c U t. The combination with a `rim for use with a pneumatic tire,v said tire being divided so as to have a transverse crack therein, -of a memberll extending transversely of saidrim and disposed oversaid cracl-z and between said rim and the casing4 of said tire so as'to close said crack, and means -secured to said member for holding said member in place.

InY testimony whereof faiiix my signature.

nar D. siinvnn. 

